Our team


Hamilton is made up of a small but dedicated team of staff members, who work with our specialist subject consultants and writers to produce and publish plans used across the world.

Mike O'Regan, Co-Director

Mike founded Hamilton Trust in 1988, and he continues to provide executive support and direction. After graduating in Economics from Cambridge, Mike travelled, worked on the shop floor and taught for two years before co-founding RM in 1973. He continued as an executive director until 1992, when he moved to a non-executive role, whilst also being closely involved with a number of other digital technology companies.

Mike has been a long-standing trustee of a number of Oxford-based educational charities, including as co-founder of Peeple (née PEEP), and periods spent as a governor of The Oxford Academy and Oxford Brookes University. He was awarded an honorary degree by Oxford Brookes University in 1999 and by the Open University in 2002. He received an OBE in the Queen’s Birthday Honours in 2000.

Professor Ruth Merttens, Co-Director

Professor Ruth Merttens oversees all of the educational projects and materials at Hamilton, as well as developing new initiatives such as our new raft of maths problem solving activities, materials for same day interventions, grammar-teaching PowerPoints and the Hamilton Secondary Numeracy Project. She runs highly-regarded training sessions for schools and teachers that want to focus on improving maths teaching and learning across the country and internationally.

Ruth was heavily involved with the development of the National Numeracy Strategy, particularly in the development of training materials. She also co-authored Abacus, the UK’s number one Primary Maths scheme and continues to work closely with Pearson. On top of all this, Ruth still teaches one day a week in her local primary school.

Ruth passionately believes that most teachers do an amazing job and need to be left alone to get on with it. She does not believe that the need to monitor schools and assess children should be the drivers of what happens in the classroom and thinks that we have in Britain a unique brand of liberal primary education which fits children for their role in an open democracy in the 21st century.

Read a selection of Ruth's publications

Athene Reiss

Athene works closely with Ruth and Mike to manage the Hamilton office and projects, including our work with the Blackbird Leys schools and the Hamilton Secondary Numeracy Project. She remembers particularly fondly those teachers, both primary and secondary, who taught with a commitment to deep subject and concept learning and problem solving. Her particular educational passion is Forest School, and she also teaches the occasional History of Art module at Oxford Brookes University.

Jeanette Viney

Jeanette IS Hamilton Education! Working closely with Hamilton Trust she deals with invoicing, book orders and all things money related. Jeanette spends a lot of time educating young people through her scouting role and can often be found in creating new and exciting games in her lunch hour!

Karen Edwards

Karen looks after the schools and teachers who use the Hamilton website and answers any of their questions about it. When she was at school she loved finding hidden treasures in the school library.

Kay Russell

Kay’s main role is to publish materials on the Hamilton website. She checks that the resources are ready before uploading them and also makes sure the latest versions are available for teachers to download. Her best memories of school are of those lessons that were fun and engaging and called on the children’s imagination.

Suzie Hunt

Suzie looks after the digital side of Hamilton, which includes maintaining and developing the Hamilton website and Player, and supports Athene in managing Hamilton projects. She has fond memories of English classes at school, where she discovered a love for comic books as well as Shakespeare!

Nick Barwick

Nick contributes maths expertise both in the office and in the schools that Hamilton supports directly. Much of his time is spent in the Blackbird Leys schools, coaching and training teachers and support staff in and out of the classroom, working alongside subject leaders and with leadership teams in order to improve consistency and raise standards. Nick has written Key Stage 3 resources for Hamilton and worked with secondary teachers on delivering those materials in school. As a ‘Post Graduate: Mathematics Specialist Teacher’ Nick is well-placed to deliver maths CPD. With a passion for getting the best out everyone he works with, he considers watching all those he supports learn, grow and achieve to be a privilege.



Our specialist subject consultants work closely with our staff and writers to ensure the highest standards of quality, consistency and pedagogy of all Hamilton's materials.

Grace Woollard

A graduate of English Literature who trained to teach at the University of Hertfordshire, Grace Woollard has more than 15 years’ experience teaching in primary schools in the South East. Grace believes that a creative and questioning approach is key in learning and that a great starting point is engaging children through high-quality literature, including picture books. Grace looks after Hamilton's English plan writers and writes English plans herself at the same time as being a full-time mum. In her free time, she dabbles in sewing and enjoys cycling around her home town on her bike, complete with wicker basket.

Jennie Kerwin

As a child, Jennie taught neighbouring children maths on a chalk board in her garage – whether they liked it or not! So it was pretty inevitable that would she end up being a teacher. She has a BEd in maths and computing and MEd in Educational policy and management. Jennie taught in a range of primary schools in the West Midlands before working for Birmingham advisory service supporting schools, mainly in ‘challenging circumstances’. She then moved to the South West to work as a regional director and writer for the National Numeracy Strategy. Jennie looks after various aspects of Hamilton's maths plans, writes maths plans for Hamilton and Abacus and is always keen to include models and images to help children to ‘see’ and understand maths.

Julie St Clair Hoare

Julie studied chemistry at university before seeing the light, completing a PGCE and becoming a primary teacher. She enjoyed teaching children from 3 to 11 in a range of schools for 20 years and also being the head teacher of a city community primary school for 10 years. Julie then took up an associate tutor role at Brookes University helping to train teachers on the Postgraduate and BA courses. Her role at Hamilton is to look after the provision of high-quality cross-curricular topic and science plans that enable teachers to deliver engaging and creative lessons that inspire children.

Naomi Norman

At age 16, Naomi wanted to be an actress. Having heard the song ‘Don’t put your daughter on the stage Mrs Worthington’, her parents insisted Naomi at least get a good degree first. And so Naomi went to University to read Mathematics and Philosophy. She followed this with a PGCE teaching certificate and worked as a secondary mathematics teacher. Later, she joined the Department of Education at Oxford University, where she earned a D.Phil (PhD) in mathematics education.

Hollywood's loss was education's gain. Naomi has since written many mathematics textbooks, and worked as series editor and consultant for yet more.  She has also been involved in a  variety of education programmes for major clients, including the BBC, London 2012 and Sesame Street. Naomi also undertakes education research projects, and is a specialist in qualitative research design and data analysis. Naomi led the Hamilton Secondary Numeracy Programme research project and commissioned, wrote or edited most of Hamilton's KS3 maths materials. She is still waiting to be cast in a major movie!



We also have a small team of freelance editors, who are superbly efficient at spotting our writing idiosyncrasies and eliminating the worst of these. We have two fantastic illustrators who are also graphic designers and animators, and whose energy, creativity and commitment are legendary.

But, there would be no plans if there were no writers, and Hamilton extends a huge Thank You to all who once were, or still are, busy writing Plans and Sessions, so that the rest of us have our Sundays!